Diplomyelia and Hydromyelia in a Japanese Black Calf

Abstract

A female, 1-month-old Japanese Black calf, which had showed weakness since birth and had difficulty standing and walking, was clinically and pathologically examined. No abnormality was found in the hip joint with simple X-ray radiography. Macroscopic examination revealed a cavity with serous fluid at T2 and duplication of the spinal cord from T3 to the lumbosacral segment. Histological examination confirmed that the inner surface of the dilated central canal was lined with ependymal cells.